Open Redirect: ringaraja.net

 1name: "Open Redirect: ringaraja.net"
 2description: |
 3    Message contains use of the ringaraja.net open redirect. This has been exploited in the wild.
 4type: "rule"
 5severity: "medium"
 6source: |
 7  type.inbound
 8  and any(body.links,
 9          .href_url.domain.root_domain == "ringaraja.net"
10          and .href_url.path =~ "/portleti/katalogponudnikov/result.asp"
11          and strings.icontains(.href_url.query_params, 'url=')
12          // negate use of the redirect by ringaraja
13          and not regex.icontains(.href_url.query_params, 'url=[^&]*ringaraja\.net')
14  ) 
15  and (
16    not profile.by_sender().solicited
17    or (
18      profile.by_sender().any_messages_malicious_or_spam
19      and not profile.by_sender().any_false_positives
20    )
21  )
22
23  // negate highly trusted sender domains unless they fail DMARC authentication
24  and (
25    (
26      sender.email.domain.root_domain in $high_trust_sender_root_domains
27      and not headers.auth_summary.dmarc.pass
28    )
29    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
30  )  
31attack_types:
32  - "Credential Phishing"
33  - "Malware/Ransomware"
34tactics_and_techniques:
35  - "Open redirect"
36detection_methods:
37  - "Sender analysis"
38  - "URL analysis"
39id: "4d9594f4-1e96-5afd-a575-8a16d2d79698"